Brian Crower BC2300-16 Titanium Valve Spring Retainers for 02-21 Subaru WRX STI

Vehicle Fitment

• 2002-2014 Subaru Impreza WRX (EJ205/EJ255, 2.0L/2.5L Turbo)
• 2004-2021 Subaru Impreza WRX STI (EJ257, 2.5L Turbo)
• 2015-2021 Subaru WRX STI (EJ257, 2.5L Turbo)
• 2005 Saab 9-2X Aero (EJ255, 2.5L Turbo)
• 1988-1992 Toyota Celica All-Trac (3S-GTE, 2.0L Turbo)
• 1993 Toyota Celica GTS All-Trac (3S-GTE, 2.0L Turbo)
• 1991-1995 Toyota MR2 Turbo (3S-GTE, 2.0L Turbo)

Fitment Notes

• Designed for 6mm valve stem applications
• Compatible with BC1600 single valve springs and other BC valve spring kits
• Subaru EJ applications require BC2960 keepers/locks (sold separately)
• Toyota 3S-GTE applications require BC2951 keepers/locks (sold separately)
• Verify keeper/lock compatibility when using with OEM or aftermarket valves

Features

• Premium 6AL4V aerospace-grade titanium construction
• CNC machined from round bar titanium to exacting tolerances
• Approximately 40% lighter than OEM steel retainers
• 100% Rockwell hardness (RC) checked for consistent quality
• Designed for high-RPM performance applications
• Reduced valvetrain mass for faster valve response
• Prevents valve float at extended RPM ranges
• Precision-machined surfaces for proper spring and keeper seating

Specifications

• Material: 6AL4V titanium alloy
• Valve Stem Diameter: 6mm
• Quantity: Set of 16 (complete engine set)
• Application: Single spring retainer configuration
• Compatible Engines: Subaru EJ20/EJ22/EJ25, Toyota 3S-GTE

Included Components

• 16x Brian Crower titanium valve spring retainers

Product Description

The Brian Crower BC2300-16 Titanium Valve Spring Retainers deliver significant weight reduction and improved valvetrain dynamics for high-performance Subaru EJ and Toyota 3S-GTE engine builds. CNC machined from premium 6AL4V aerospace-grade titanium round bar stock, these retainers weigh approximately 40% less than factory steel units, reducing reciprocating mass for faster valve response and higher safe RPM limits. Every retainer is 100% Rockwell hardness checked to ensure consistent metallurgical properties across the complete set of 16 pieces.

Designed to work seamlessly with Brian Crower valve springs by PAC Racing, these titanium retainers are essential for builds targeting extended RPM ranges where valve float becomes a concern with heavier OEM components. The precision CNC machining ensures proper seating surfaces for valve springs and keepers, maintaining consistent installed heights and spring pressures. Whether building a rally-spec WRX, time attack STI, or turbocharged Celica All-Trac, the BC2300-16 retainers provide the lightweight strength needed for reliable high-RPM performance. Professional installation and proper valve spring matching are recommended to achieve optimal results.